JP7503001B2 - Power transmitting device, power receiving device, and power transmitting/receiving system including them - Google Patents

Power transmitting device, power receiving device, and power transmitting/receiving system including them Download PDF

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JP7503001B2
JP7503001B2 JP2021002591A JP2021002591A JP7503001B2 JP 7503001 B2 JP7503001 B2 JP 7503001B2 JP 2021002591 A JP2021002591 A JP 2021002591A JP 2021002591 A JP2021002591 A JP 2021002591A JP 7503001 B2 JP7503001 B2 JP 7503001B2
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power
coil
power receiving
receiving device
positioning means
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JP2022107903A (en
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浩三 増田
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Hitachi LG Data Storage Inc
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Hitachi LG Data Storage Inc
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Priority to CN202210006131.5A priority patent/CN114765387A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0044Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04Regulation of charging current or voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Description

本発明は、ワイヤレス電力伝送の技術に関する。 The present invention relates to wireless power transmission technology.

例えば、携帯端末やゲーム機などの携帯型の小型の電子機器では、機器に内蔵された二次電池等への充電は、ACコンセントや補助用電源から有線で充電端子を介して行うのが一般的である。しかしながら、近年では、これらの電子機器の普及に伴って、使い勝手を考慮した簡便な充電方式として充電端子を介さずに非接触で行うワイヤレス電力伝送方式を用いる機種が増えている。 For example, in small portable electronic devices such as mobile terminals and game consoles, charging of secondary batteries built into the devices is generally performed via a wired charging terminal from an AC outlet or auxiliary power source. However, in recent years, with the spread of these electronic devices, an increasing number of models are using wireless power transmission methods that do not use a charging terminal and are a simple charging method that takes usability into consideration.

本技術分野におけるワイヤレス電力伝送装置に関し、例えば特許文献1に記載のものがある。特許文献1では、電磁誘導型ワイヤレス電力伝送において、送電コイルから受電コイルに対する電力伝送効率を向上するためには、送電コイルに対する受電コイルの位置を正確に合わせる必要があり、簡素な構成で送電コイルと受電コイルの相対位置を検出する構成が開示されている。 For example, Patent Document 1 discloses a wireless power transmission device in this technical field. Patent Document 1 discloses that in electromagnetic induction type wireless power transmission, in order to improve the efficiency of power transmission from the power transmission coil to the power receiving coil, it is necessary to accurately align the position of the power receiving coil with respect to the power transmission coil, and discloses a configuration for detecting the relative positions of the power transmission coil and the power receiving coil with a simple configuration.

特開2013-179820号公報JP 2013-179820 A

特許文献1では、検出した送電コイルと受電コイルの相対位置に基づき送電コイルと受電コイルの中心軸を一致させる。 In Patent Document 1, the central axes of the power transmission coil and the power receiving coil are aligned based on the detected relative positions of the power transmission coil and the power receiving coil.

しかしながら、送電装置や受電する電子機器の薄型化のため送電コイルと受電コイルの距離が近づくと両コイルの結合係数が高くなり過ぎて伝送可能な電力が低下するという現象がある。そのため、電力伝送効率優先での送電コイルと受電コイルの相対位置は、最大電力を得る位置と必ずしも一致しない。そのため、特許文献1では、電力伝送効率についてのみ考慮しており、伝送可能な電力については考慮していない。 However, when the distance between the power transmitting coil and the power receiving coil becomes too close due to the thinning of the power transmitting device and the electronic device that receives power, the coupling coefficient between the two coils becomes too high, resulting in a decrease in the transmittable power. Therefore, the relative positions of the power transmitting coil and the power receiving coil when prioritizing power transmission efficiency do not necessarily match the positions that obtain maximum power. For this reason, Patent Document 1 only considers power transmission efficiency, and does not consider the transmittable power.

本発明の目的は、上記課題に鑑み、伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を調整可能な送電装置、受電装置、およびそれらを備えた送受電システムを提供することである。 In view of the above problems, the object of the present invention is to provide a power transmission device, a power receiving device, and a power transmission and receiving system including the same that can adjust the relative positions of the power transmission coil and the power receiving coil to maximize the transmittable power.

本発明は、その一例を挙げるならば、送電コイルを有し、受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送電装置であって、受電装置を載置する位置決め手段を有し、送電コイルは、位置決め手段の載置面の下部に略平行になるように配置されており、受電装置を位置決め手段の載置面に載置した際に、受電コイルは載置面と略平行になるように配置されており、送電コイルの中心が受電コイルの中心から所定距離スライドして配置している構成とする。 As one example, the present invention provides a power transmission device that has a power transmission coil and transmits power by wireless power transmission to a power receiving device that has a power receiving coil, and has a positioning means for placing the power receiving device, the power transmission coil is arranged so as to be approximately parallel to the lower part of the placement surface of the positioning means, and when the power receiving device is placed on the placement surface of the positioning means, the power receiving coil is arranged so as to be approximately parallel to the placement surface, and the center of the power transmission coil is slid a predetermined distance from the center of the power receiving coil.

本発明によれば、伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を調整可能な送電装置、受電装置、およびそれらを備えた送受電システムを提供できる。 The present invention provides a power transmission device, a power receiving device, and a power transmission and receiving system including the same that can adjust the relative positions of the power transmission coil and the power receiving coil to maximize the transmittable power.

実施例1における送受電システムの概略構成ブロック図である。1 is a schematic configuration block diagram of a power transmitting and receiving system according to a first embodiment. 実施例1における受電装置主機能部の概略機能構成図である。2 is a schematic functional configuration diagram of a main function section of the power receiving device according to the first embodiment. FIG. 実施例1における送電装置の平面図および側面図である。1A and 1B are a plan view and a side view of a power transmitting device according to a first embodiment. 実施例1における受電装置の平面図および側面図である。2A and 2B are a plan view and a side view of a power receiving device according to a first embodiment. 実施例1における受電装置を送電装置に載置した状態の平面図および側面図である。2A and 2B are a plan view and a side view of a state in which a power receiving device is placed on a power transmitting device in the first embodiment. 実施例1における送電装置の変形例の平面図および側面図である。11A and 11B are a plan view and a side view of a modified example of the power transmitting device in the first embodiment. 実施例1における送電装置の他の変形例の平面図である。13 is a plan view of another modified example of the power transmitting device in the first embodiment. FIG. 実施例1における伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離を決定する手法の説明図である。4 is an explanatory diagram of a method for determining a relative distance between a power transmitting coil and a power receiving coil that can maximize transmittable power in the first embodiment. FIG. 実施例1における伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を決定する処理フロー図である。FIG. 11 is a process flow diagram for determining the relative positions of the power transmitting coil and the power receiving coil that can maximize the transmittable power in the first embodiment. 実施例2における送受電システムの概略構成ブロック図である。FIG. 11 is a schematic configuration block diagram of a power transmitting and receiving system according to a second embodiment. 実施例2における送電装置に受電装置を載置した状態の平面図および側面図である。13A and 13B are a plan view and a side view of a state in which a power receiving device is placed on a power transmitting device in a second embodiment. 実施例2における受電装置での表示画面例を説明する図である。13A and 13B are diagrams illustrating an example of a display screen of a power receiving device according to a second embodiment. 実施例3における送電装置の平面図および側面図である。13A and 13B are a plan view and a side view of a power transmitting device according to a third embodiment. 実施例4における送受電システムの概略構成ブロック図である。FIG. 11 is a schematic configuration block diagram of a power transmitting and receiving system according to a fourth embodiment. 実施例4におけるデータ伝送を用いたワイヤレス電力伝送の処理フロー図である。FIG. 13 is a process flow diagram of wireless power transmission using data transmission in the fourth embodiment. 実施例4における受電装置での表示画面例を説明する図である。13 is a diagram illustrating an example of a display screen of a power receiving device according to a fourth embodiment. FIG. 従来におけるワイヤレス電力伝送の問題点を説明する図である。1A and 1B are diagrams illustrating problems with conventional wireless power transmission.

以下、本発明の実施例について図面を用いて説明する。 The following describes an embodiment of the present invention with reference to the drawings.

まず、従来のワイヤレス電力伝送における問題点について説明する。図17は従来におけるワイヤレス電力伝送の問題点を説明する図である。図17において、(a)は、送電装置10上に受電装置20を載置した状態を横から見た断面の概略図であり、送電コイル16および受電コイル21は、載置面に対して略平行になるように配置されており、さらに、それぞれの筐体の厚さの距離を隔てて配置される。 First, the problems with conventional wireless power transmission will be described. Figure 17 is a diagram illustrating the problems with conventional wireless power transmission. In Figure 17, (a) is a schematic diagram of a cross section seen from the side of a power receiving device 20 placed on a power transmitting device 10, in which the power transmitting coil 16 and the power receiving coil 21 are arranged so as to be approximately parallel to the placement surface, and are further arranged at a distance equal to the thickness of their respective housings.

受電装置20を充電する場合、受電装置20の筐体の背面(下面)を送電装置10の筐体の上面に対向させて送電装置10上に載置するとともに、送電装置10の送電スイッチをONにする。すると、送電コイル16に流れた高周波の電流により交流磁束が発生し、トランスの原理と同様の電磁誘電作用により、対向する受電コイル21に交流電圧が誘起され、受電装置20の二次電池に給電されることで、受電装置2の0の充電を行うことが出来る。 When charging the power receiving device 20, the back (bottom) of the housing of the power receiving device 20 is placed on the power transmitting device 10 facing the top of the housing of the power transmitting device 10, and the power transmitting switch of the power transmitting device 10 is turned ON. Then, an AC magnetic flux is generated by the high-frequency current flowing through the power transmitting coil 16, and an AC voltage is induced in the opposing power receiving coil 21 due to an electromagnetic induction effect similar to the principle of a transformer, and power is supplied to the secondary battery of the power receiving device 20, thereby charging the power receiving device 20.

ここで、(b)に示すように、送電コイル16と受電コイル21の中心軸の差であるスライド量と結合係数との関係は、スライド量がゼロのとき結合係数が最大となるので、従来のワイヤレス電力伝送においては、送電時の電力伝送効率を確保するために、送電コイル16と受電コイル21の中心軸を一致させるようにしている。すなわち、(a)に示す送電コイル16と受電コイル21の中心軸の差nをゼロにするように位置合わせを行う。 As shown in (b), the relationship between the sliding amount, which is the difference between the central axes of the power transmitting coil 16 and the power receiving coil 21, and the coupling coefficient is such that the coupling coefficient is maximized when the sliding amount is zero. Therefore, in conventional wireless power transmission, the central axes of the power transmitting coil 16 and the power receiving coil 21 are aligned to ensure power transmission efficiency during power transmission. In other words, the coils are aligned so that the difference n between the central axes of the power transmitting coil 16 and the power receiving coil 21 shown in (a) is zero.

しかしながら、(c)に示すように、送電装置や受電する電子機器の薄型化のため送電コイルと受電コイルの距離が近づくと両コイルの結合係数が高くなり過ぎて相互インダクタンスが大きくなり、伝送可能な電力が低下するという現象がある。すなわち、電力伝送効率優先での送電コイルと受電コイルの相対位置は、最大電力を得る位置と必ずしも一致しない。 However, as shown in (c), when the distance between the power transmitting coil and the power receiving coil is reduced in order to make the power transmitting device and the power receiving electronic device thinner, the coupling coefficient between the two coils becomes too high, the mutual inductance increases, and the transmittable power decreases. In other words, the relative positions of the power transmitting coil and the power receiving coil when prioritizing power transmission efficiency do not necessarily match the positions at which maximum power can be obtained.

そこで、本実施例では、伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を調整可能な送電装置、受電装置、およびそれらを備えた送受電システムを提供する。以下、具体的に説明する。 In this embodiment, therefore, we provide a power transmission device, a power receiving device, and a power transmission and receiving system including them that can adjust the relative positions of the power transmission coil and the power receiving coil to maximize the transmittable power. The details are explained below.

図1は、本実施例における送受電システムの概略構成ブロック図である。図1において、送受電システムは、ワイヤレスで電力(高周波電流)を送る送電コイル16を備えた送電装置10と、送電装置10から送られる電力を受信する受電コイル21を備えた受電装置20で構成される。 Figure 1 is a schematic block diagram of a power transmission and reception system in this embodiment. In Figure 1, the power transmission and reception system is composed of a power transmission device 10 equipped with a power transmission coil 16 that wirelessly transmits power (high-frequency current), and a power reception device 20 equipped with a power reception coil 21 that receives the power transmitted from the power transmission device 10.

送電装置10は、汎用的なAC100~120Vの電源を使用する据え置き型の充電台でもよいし、机やテーブルの上に載置される、あるいはこれら家具の上面の凹部に埋め込まれて固定的に使用される形態でもよい。 The power transmission device 10 may be a stationary charging stand that uses a general-purpose 100 to 120V AC power source, or may be placed on a desk or table, or embedded in a recess in the top surface of such furniture for fixed use.

図1において、送電装置10は、送電コイル16、送電スイッチ(送電SW)17、電源11、整流平滑回路12、DC/DC変換器13、送電制御部14、送電コイル励振回路15を有する。 In FIG. 1, the power transmission device 10 includes a power transmission coil 16, a power transmission switch (power transmission SW) 17, a power source 11, a rectifying and smoothing circuit 12, a DC/DC converter 13, a power transmission control unit 14, and a power transmission coil excitation circuit 15.

電源11は、例えば電源コンセントから交流電圧(AC100V)を入力する電源ケーブルや電源供給のオン/オフを切り替えるためのスイッチICなどを有し、電源ケーブルを通じて送電される交流電圧を整流平滑回路12に供給する。 The power supply 11 includes, for example, a power cable that inputs an AC voltage (AC 100V) from a power outlet and a switch IC for switching the power supply on and off, and supplies the AC voltage transmitted through the power cable to the rectifying and smoothing circuit 12.

整流平滑回路12は、例えば半導体ダイオードおよびコンデンサーを用いた回路であって、交流電圧の整流(直流)化および平滑化の処理を行うことにより、入力した交流電圧を一定電圧の直流電圧に変換し、変換後の電力をDC/DC変換器13に供給する。 The rectifying and smoothing circuit 12 is, for example, a circuit using semiconductor diodes and capacitors, and converts the input AC voltage into a constant DC voltage by rectifying (converting) and smoothing the AC voltage, and supplies the converted power to the DC/DC converter 13.

DC/DC変換器13は、入力した直流電圧を、送電コイル16の励起に必要となる電圧に変換(降圧)し、降圧後の電力を送電制御部14に供給する。 The DC/DC converter 13 converts (steps down) the input DC voltage to the voltage required to excite the power transmission coil 16, and supplies the stepped-down power to the power transmission control unit 14.

送電制御部14は、送電SW17の状態(ON又はOFF)に応じて、DC/DC変換器13から入力される直流電圧を、送電コイル励振回路15に供給し又は供給停止する。なお、送電制御部14は、CPUやMPUなどのプロセッサーであって、記憶装置に格納された基本プログラムをプロセッサーが実行するソフトウェア処理により、送電装置10の全体を統括的に制御する。 The power transmission control unit 14 supplies or stops the supply of the DC voltage input from the DC/DC converter 13 to the power transmission coil excitation circuit 15 depending on the state (ON or OFF) of the power transmission SW 17. The power transmission control unit 14 is a processor such as a CPU or MPU, and performs overall control of the entire power transmission device 10 by software processing in which the processor executes a basic program stored in a storage device.

送電コイル励振回路15は、送電コイル16を励振させるために、直流電圧を交流電圧に変換するインバーター回路を備える。また、送電コイル励振回路15は、送電制御部14から供給される直流電圧を所定の電圧および周波数の交流電圧に変換し、その交流電圧を送電コイル16に出力する。 The power transmission coil excitation circuit 15 includes an inverter circuit that converts DC voltage to AC voltage in order to excite the power transmission coil 16. The power transmission coil excitation circuit 15 also converts the DC voltage supplied from the power transmission control unit 14 into AC voltage of a predetermined voltage and frequency, and outputs the AC voltage to the power transmission coil 16.

送電コイル16は、例えばリッツ線などの電線が平面略リング状となるように巻かれたスパイラル型のサーキュラーコイルである。 The power transmission coil 16 is a spiral-type circular coil in which an electric wire, such as a Litz wire, is wound into a planar, approximately ring-like shape.

次に、受電装置20は、例えば、スマートフォン等の携帯型の端末装置であって、筐体内に、受電部をなす受電コイル21が配置されている。図1において、受電装置20は、受電部として、受電コイル21と整流平滑回路22と充電制御部23と二次電池24を備え、それ以外に、受電装置主機能部25を有する。例えば、受電装置20がスマートフォンであれば、操作入力機能と画像表示機能とを兼ね備えたタッチパネル式の操作入力部や、画像処理部、音声処理部、センサ部、通信部等が主機能部となる。詳細は後述する。 Next, the power receiving device 20 is, for example, a portable terminal device such as a smartphone, and has a power receiving coil 21 that constitutes a power receiving unit disposed within a housing. In FIG. 1, the power receiving device 20 includes, as a power receiving unit, the power receiving coil 21, a rectifying and smoothing circuit 22, a charging control unit 23, and a secondary battery 24, and also includes a power receiving device main function unit 25. For example, if the power receiving device 20 is a smartphone, the main function units include a touch panel type operation input unit that combines operation input function and image display function, an image processing unit, an audio processing unit, a sensor unit, a communication unit, etc. Details will be described later.

図1において、受電コイル21は、上述した送電コイル16と同等の構成によるスパイラル型のサーキュラーコイルである。整流平滑回路22は、例えばダイオードやコンデンサーを備えた回路であり、受電コイル21に生じた誘起電流(交流)を、整流(脈流)化及び平滑化して、安定した電圧の直流電圧を生成する。充電制御部23は、整流平滑回路22から入力される直流電圧を、二次電池24に供給する。二次電池24は、繰り返し充放電が可能な電池であり、例えばリチウムイオン電池である。 In FIG. 1, the receiving coil 21 is a spiral-type circular coil with a configuration equivalent to that of the transmitting coil 16 described above. The rectifying and smoothing circuit 22 is a circuit equipped with, for example, a diode and a capacitor, and rectifies (pulsates) and smoothes the induced current (AC) generated in the receiving coil 21 to generate a stable DC voltage. The charging control unit 23 supplies the DC voltage input from the rectifying and smoothing circuit 22 to the secondary battery 24. The secondary battery 24 is a battery that can be repeatedly charged and discharged, for example a lithium-ion battery.

図2は、受電装置20がスマートフォンである場合の、受電装置主機能部25の概略機能構成図である。図2に示すように、受電装置主機能部25は、主制御部251、記憶部253、操作入力部254、画像処理部255、音声処理部256、センサ部257、通信部258、拡張インタフェース(I/F)259等で構成され、これらがシステムバス252を介して電気的に接続されている。 Figure 2 is a schematic functional configuration diagram of the power receiving device main function unit 25 when the power receiving device 20 is a smartphone. As shown in Figure 2, the power receiving device main function unit 25 is composed of a main control unit 251, a memory unit 253, an operation input unit 254, an image processing unit 255, an audio processing unit 256, a sensor unit 257, a communication unit 258, an expansion interface (I/F) 259, etc., which are electrically connected via a system bus 252.

主制御部251は、CPUやMPUなどのプロセッサーであって、記憶部253に格納された基本プログラムをプロセッサーが実行するソフトウェア処理により、受電装置主機能部25の全体の各機能部を制御する。なお、主制御部251は、充電制御部23の機能を兼用し受電装置主機能部25だけでなく受電部を含めた受電装置20の全体を制御してもよい。 The main control unit 251 is a processor such as a CPU or MPU, and controls each functional unit of the power receiving device main function unit 25 as a whole by software processing in which the processor executes a basic program stored in the memory unit 253. The main control unit 251 may also serve as the function of the charging control unit 23 and control not only the power receiving device main function unit 25 but also the entire power receiving device 20 including the power receiving unit.

なお、図2の受電装置主機能部25の各機能は、一般的に知られるスマートフォンの機能と同様であり、その詳細は省略し、簡単に下記する。 Note that the functions of the power receiving device main function unit 25 in FIG. 2 are similar to those of a commonly known smartphone, so details are omitted and a brief description is given below.

操作入力部254は、受電装置20に対するユーザの操作入力を受け付けるユーザ操作インタフェースである。具体的には、操作入力部220は、電源キー、音量キー、ホームキー等の操作キーや、タッチパネル等を有する。タッチパネルは、表示部に重ねて一体的に配置されたタッチスクリーンである。 The operation input unit 254 is a user operation interface that accepts user operation input to the power receiving device 20. Specifically, the operation input unit 220 has operation keys such as a power key, a volume key, and a home key, as well as a touch panel. The touch panel is a touch screen that is integrally arranged on top of the display unit.

画像処理部255は、表示部と画像信号処理部と撮像部とを備え、撮像部で撮像された電気信号をデジタルの画像データとして生成し、生成された画像データを表示させる。また記憶部253から読み出された画像データを表示部に表示する。 The image processing unit 255 includes a display unit, an image signal processing unit, and an imaging unit, and generates an electrical signal captured by the imaging unit as digital image data and displays the generated image data. It also displays image data read from the memory unit 253 on the display unit.

音声処理部256は、音声出力部と音声信号処理部と音声入力部とを備え、音声信号処理部で処理した音声を出力し、音声入力部からユーザの声などを入力する。 The audio processing unit 256 includes an audio output unit, an audio signal processing unit, and an audio input unit, and outputs audio processed by the audio signal processing unit and inputs the user's voice, etc., from the audio input unit.

センサ部257は、動き・振動・衝撃などを検出する加速度センサや、回転方向の角速度を検出し、縦・横・斜めの姿勢の状態を捉えるジャイロセンサ等を有する。 The sensor unit 257 includes an acceleration sensor that detects movement, vibration, and impact, and a gyro sensor that detects angular velocity in the rotational direction and captures vertical, horizontal, and diagonal posture states.

通信部258は、ワイヤレス通信方式によりネットワークと接続して、ネットワーク上の管理サーバーとデータの送受信を行ない、また、近距離無線通信等を行う。 The communication unit 258 connects to the network via a wireless communication method, transmits and receives data to and from a management server on the network, and also performs short-range wireless communication, etc.

拡張I/F259は、受電装置20の機能を検出する張するためのインタフェース群である。 The extension I/F 259 is a group of interfaces for extending the capabilities of the power receiving device 20.

図3は、本実施例における送電装置10の平面図および側面図である。(a)が平面図、(b)が側面図である。図3において、送電装置10は、受電装置20を載置する平面な載置面を有する窪み10aを有し、窪み10aは、受電装置20の外形と一致しており、載置する受電装置20の位置を固定する位置決め用として機能する。また、送電コイル16は、窪み10aの載置面の下部に略平行になるように配置されており、送電コイル16の中心を送電装置10の筐体中心からy軸方向にnだけスライドして配置している。また、送電SW17は、スライド式の手動スイッチであり送電装置10の筐体側面に配置している。なお、送電SW17は、例えばプッシュ式など、他の任意の形式のスイッチでもよい。 3 is a plan view and a side view of the power transmission device 10 in this embodiment. (a) is a plan view, and (b) is a side view. In FIG. 3, the power transmission device 10 has a recess 10a having a flat mounting surface on which the power receiving device 20 is placed, and the recess 10a matches the outer shape of the power receiving device 20 and functions as a positioning device for fixing the position of the placed power receiving device 20. The power transmission coil 16 is arranged so as to be approximately parallel to the lower part of the mounting surface of the recess 10a, and the center of the power transmission coil 16 is slid by n in the y-axis direction from the center of the housing of the power transmission device 10. The power transmission SW 17 is a slide-type manual switch and is arranged on the side of the housing of the power transmission device 10. The power transmission SW 17 may be any other type of switch, such as a push-type switch.

図4は、本実施例における受電装置20の平面図および側面図である。図4において、(a)が、スマートフォンをイメージして表示パネル28の面がx、y平面となる平面図であり、(b)がx軸正方向から見た側面図である。受電コイル21は、表示パネル28の下部に筐体の下面と略平行になるように配置されており、受電コイル21の中心を受電装置20の中心に配置している。 Figure 4 shows a plan view and a side view of the power receiving device 20 in this embodiment. In Figure 4, (a) is a plan view imagining a smartphone in which the surface of the display panel 28 is the xy plane, and (b) is a side view seen from the positive x-axis direction. The power receiving coil 21 is disposed below the display panel 28 so as to be approximately parallel to the bottom surface of the housing, and the center of the power receiving coil 21 is disposed at the center of the power receiving device 20.

図5は、本実施例における図4に示した受電装置20を図3に示した送電装置10に載置した状態の平面図および側面図である。(a)が平面図、(b)が側面図、(c)が側面図(b)の拡大図である。図5に示すように、受電装置20は、送電装置10の窪み10aに格納され、送電装置10において載置する受電装置20の位置は固定される。すなわち、送電コイル16の中心と受電コイル21との中心はy軸方向にnだけスライドして配置される。なお、図5においては、それぞれのコイルのx方向は筐体の中心であるが、2つのコイルの中心がnだけ離れていればよいので、例えば、その距離を保った状態で2つのコイルをx方向、y方向またはその両方にずらして配置してもよい。また、(c)に示すように、送電コイル16および受電コイル21は、窪み10aの載置面を介して、それぞれの筐体の厚さの距離であるギャップ長lを隔てて配置される。 5 is a plan view and a side view of the power receiving device 20 shown in FIG. 4 in this embodiment placed on the power transmitting device 10 shown in FIG. 3. (a) is a plan view, (b) is a side view, and (c) is an enlarged view of the side view (b). As shown in FIG. 5, the power receiving device 20 is stored in the recess 10a of the power transmitting device 10, and the position of the power receiving device 20 placed on the power transmitting device 10 is fixed. That is, the center of the power transmitting coil 16 and the center of the power receiving coil 21 are slid by n in the y-axis direction and placed. In FIG. 5, the x direction of each coil is the center of the housing, but since it is sufficient that the centers of the two coils are separated by n, for example, the two coils may be placed with the distance maintained while shifted in the x direction, the y direction, or both. Also, as shown in (c), the power transmitting coil 16 and the power receiving coil 21 are placed with a gap length l, which is the distance of the thickness of each housing, through the placement surface of the recess 10a.

そのため、送電装置10における送電コイル16の中心からのスライド量nを、伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離となるように設計すれば、伝送可能な電力を最大化できる送電装置、受電装置、およびそれらを備えた送受電システムを提供できる。 Therefore, if the sliding amount n from the center of the power transmission coil 16 in the power transmission device 10 is designed to be the relative distance between the power transmission coil and the power receiving coil that maximizes the transmittable power, it is possible to provide a power transmission device, a power receiving device, and a power transmission and receiving system equipped with them that can maximize the transmittable power.

なお、図3から図5の説明では、スライド量nを送電装置10側で確保しているが、送電コイルと受電コイルの相対距離がスライド量nとなればよいので、受電装置20側で受電コイル21の中心を受電装置20の筐体中心からy軸方向にnだけスライドして配置し送電装置10側のスライド量をゼロとするように構成してもよい。また、送電装置10と受電装置20でスライド量nを分担するようにしてもよい。 In the explanation of Figures 3 to 5, the slide amount n is secured on the power transmission device 10 side, but since it is sufficient that the relative distance between the power transmission coil and the power receiving coil is the slide amount n, the center of the power receiving coil 21 on the power receiving device 20 side may be slid by n in the y-axis direction from the center of the housing of the power receiving device 20, and the slide amount on the power transmission device 10 side may be zero. Also, the slide amount n may be shared between the power transmission device 10 and the power receiving device 20.

また、送電装置10の窪み10aは、受電装置20の外形と一致しており、載置する受電装置20の位置を固定する位置決め用として機能すると説明したが、窪み10aは受電装置20の位置を固定する位置決め用として機能すればよいので、受電装置20の外形と一致している必要はなく、例えば、受電装置20の位置を固定する突起を有していてもよい。 In addition, it has been explained that the recess 10a of the power transmission device 10 matches the external shape of the power receiving device 20 and functions as a positioning device for fixing the position of the power receiving device 20 to be placed on it, but as long as the recess 10a functions as a positioning device for fixing the position of the power receiving device 20, it does not need to match the external shape of the power receiving device 20 and may, for example, have a protrusion for fixing the position of the power receiving device 20.

図6は、図3の変形例であり、本実施例における送電装置の平面図および側面図である。図6において、図3と同じ構成は同じ符号を付し、その説明は省略する。図6において、図3と異なる点は、受電装置20を載置する窪み10aに代えて、位置決め用の突起である位置決め手段を有する点である。すなわち、図6において、(a)は、送電装置10の外形の4辺に位置決め手段10b、10c、10d、10eを有し、受電装置20を載置した際に、送電装置10と受電装置20の位置を固定できる。また、(b)は、送電装置10の外形の4隅にL字状の位置決め手段10f、10g、10h、10iを有し、受電装置20を載置した際に、送電装置10と受電装置20の位置を固定できる。これにより、図5と同様に、送電装置10における送電コイル16と受電装置20における受電コイル21との位置を特定できるので、送電コイルと受電コイルの相対距離であるスライド量nを、伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離となるように設計すれば、伝送可能な電力を最大化できる送電装置、受電装置、およびそれらを備えた送受電システムを提供できる。 Figure 6 is a modified example of Figure 3, and is a plan view and a side view of the power transmission device in this embodiment. In Figure 6, the same components as those in Figure 3 are given the same reference numerals, and their description will be omitted. In Figure 6, the difference from Figure 3 is that instead of the recess 10a on which the power receiving device 20 is placed, a positioning means that is a protrusion for positioning is provided. That is, in Figure 6 (a), the power transmission device 10 has positioning means 10b, 10c, 10d, and 10e on the four sides of the outer shape of the power transmission device 10, and when the power receiving device 20 is placed, the positions of the power transmission device 10 and the power receiving device 20 can be fixed. Also, in Figure 6 (b), the power transmission device 10 has L-shaped positioning means 10f, 10g, 10h, and 10i on the four corners of the outer shape of the power transmission device 10, and when the power receiving device 20 is placed, the positions of the power transmission device 10 and the power receiving device 20 can be fixed. As a result, similar to FIG. 5, the positions of the power transmission coil 16 in the power transmission device 10 and the power receiving coil 21 in the power receiving device 20 can be identified, and if the slide amount n, which is the relative distance between the power transmission coil and the power receiving coil, is designed to be the relative distance between the power transmission coil and the power receiving coil that maximizes the transmittable power, it is possible to provide a power transmission device, a power receiving device, and a power transmission and receiving system including them that can maximize the transmittable power.

図7は、図3の他の変形例であり、本実施例における送電装置の平面図である。図7において、図3と同じ構成は同じ符号を付し、その説明は省略する。図7において、図3と異なる点は、送電コイル16の設置可能位置が複数である送電コイル収納スペース10sを窪み10aの載置面の下部に略平行になるように配置して設け、送電コイル16を送電コイル収納スペース10s内のどこに配置するかで所望の送電コイルの位置に固定する点である。すなわち、(a)では、送電コイル16の設置可能位置が3つである送電コイル収納スペース10sを設け、送電コイル16を送電装置10の筐体中心からy軸方向に最も離れた位置に配置した場合を示している。(b)では、送電コイル16を送電装置10の筐体中心からy軸方向に中間距離離れた位置に配置した場合を示している。また、(c)では、送電コイル16の中心を送電装置10の筐体中心の位置に配置した場合を示している。 Figure 7 is another modified example of Figure 3, and is a plan view of the power transmission device in this embodiment. In Figure 7, the same components as those in Figure 3 are given the same reference numerals, and their description will be omitted. In Figure 7, the difference from Figure 3 is that the power transmission coil storage space 10s, in which the power transmission coil 16 can be installed at multiple positions, is arranged substantially parallel to the lower part of the mounting surface of the recess 10a, and the power transmission coil 16 is fixed to the desired power transmission coil position depending on where it is placed in the power transmission coil storage space 10s. That is, (a) shows a case in which the power transmission coil 16 is installed at three positions, and the power transmission coil 16 is arranged at the farthest position from the center of the housing of the power transmission device 10 in the y-axis direction. (b) shows a case in which the power transmission coil 16 is arranged at a position at an intermediate distance from the center of the housing of the power transmission device 10 in the y-axis direction. Also, (c) shows a case in which the center of the power transmission coil 16 is arranged at the center of the housing of the power transmission device 10.

これにより、図3では、スライド量nが1つに固定されるが、図7では、送電コイル16の位置を複数の位置から選択できる。そのため、送電装置10における送電コイル16の中心からのスライド量nを選択できるように複数の送電コイル16を収納するスペースを設計しておき、伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離となる位置になるように製造時に選択すれば、伝送可能な電力を最大化できる送電装置、受電装置、およびそれらを備えた送受電システムを提供できる。 As a result, while the sliding amount n is fixed to one in FIG. 3, the position of the power transmission coil 16 can be selected from multiple positions in FIG. 7. Therefore, by designing a space to accommodate multiple power transmission coils 16 so that the sliding amount n from the center of the power transmission coil 16 in the power transmission device 10 can be selected, and selecting a position at the time of manufacture that results in a relative distance between the power transmission coil and the power receiving coil that maximizes the transmittable power, it is possible to provide a power transmission device, a power receiving device, and a power transmission and receiving system equipped with them that can maximize the transmittable power.

なお、図7の説明においても、スライド量nを送電装置10側で確保しているが、受電装置20側で受電コイル21の位置を複数の位置から選択できるように構成してもよい。また、送電装置10と受電装置20でスライド量nを分担するようにしてもよい。 In the explanation of FIG. 7, the slide amount n is secured on the power transmission device 10 side, but the power reception device 20 side may be configured to select the position of the power reception coil 21 from a plurality of positions. Also, the slide amount n may be shared between the power transmission device 10 and the power reception device 20.

図8は、本実施例における伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離を決定する手法の説明図である。図8において、(a)は、送電コイルと受電コイルの所定のスライド量におけるギャップ長と結合係数の関係を示した図であり、所定のスライド量においてギャップ長の増加に伴い結合係数は減少する。また、(b)は、結合係数と伝送可能な電力との関係を示した図であり、所定のスライド量(例えばスライド量=0)の状態でギャップ長を調整して目標電力pが得られる範囲の中央部の結合係数mを求める。なお、所望の電力が得られる範囲内であれば中央部でなくてもよい。次に、(c)は、送電コイルと受電コイルとのスライド量と結合係数の関係を示した図であり、所望のギャップ長の条件でスライド量を変化させて結合係数がmとなるスライド量nを求める。 Figure 8 is an explanatory diagram of a method for determining the relative distance between the power transmitting coil and the power receiving coil that can maximize the transmittable power in this embodiment. In Figure 8, (a) is a diagram showing the relationship between the gap length and the coupling coefficient at a specified sliding amount of the power transmitting coil and the power receiving coil, and the coupling coefficient decreases as the gap length increases at a specified sliding amount. Also, (b) is a diagram showing the relationship between the coupling coefficient and the transmittable power, and the coupling coefficient m is obtained at the center of the range where the target power p is obtained by adjusting the gap length in a state of a specified sliding amount (for example, sliding amount = 0). Note that it does not have to be the center as long as it is within the range where the desired power is obtained. Next, (c) is a diagram showing the relationship between the sliding amount and the coupling coefficient between the power transmitting coil and the power receiving coil, and the sliding amount n is changed under the desired gap length condition to obtain the sliding amount n where the coupling coefficient becomes m.

図9は、本実施例における伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を決定する処理フロー図である。図9においては、図8で説明した伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離を決定する手法に従い、送電コイルと受電コイルの相対距離が求めたスライド量nになるように、送電装置10または受電装置20のコイル位置を設計段階で実行する。具体的には、ステップS81において、スライド量=0の状態でギャップ長を調整して所望の電力が得られる結合係数mを求める。次に、ステップS82において、所望のギャップ長に固定した状態でスライド量を変化させて求めた結合係数mが得られるスライド量nを求める。そして、ステップS83において、送電コイル中心と受電コイル中心のスライド量がnとなるように送電装置及び受電装置の機構を設計する。 Figure 9 is a process flow diagram for determining the relative positions of the power transmission coil and the power receiving coil that can maximize the transmittable power in this embodiment. In Figure 9, the coil position of the power transmission device 10 or the power receiving device 20 is performed at the design stage so that the relative distance between the power transmission coil and the power receiving coil becomes the determined slide amount n according to the method for determining the relative distance between the power transmission coil and the power receiving coil that can maximize the transmittable power described in Figure 8. Specifically, in step S81, the gap length is adjusted with the slide amount = 0 to obtain the coupling coefficient m that obtains the desired power. Next, in step S82, the slide amount n is obtained by changing the slide amount with the gap length fixed at the desired gap length to obtain the obtained coupling coefficient m. Then, in step S83, the mechanisms of the power transmission device and the power receiving device are designed so that the slide amount between the center of the power transmission coil and the center of the power receiving coil becomes n.

このように、本実施例によれば、伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を備えた送電装置、受電装置、およびそれらを備えた送受電システムを提供できる。 In this way, according to this embodiment, it is possible to provide a power transmission device, a power receiving device, and a power transmission and receiving system including them, in which the relative positions of the power transmission coil and the power receiving coil can be maximized.

実施例1では、伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を備えた送電装置、受電装置を提供できるが、送電コイルと受電コイルの形状や大きさ、ギャップ長ごとに、伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置は変化するため、異なる相対位置に対応した製品をそれぞれ作製、製造する必要があり、それぞれに製番が変わり、それぞれに製品の認証を取る必要があるという課題がある。そこで、本実施例では、異なる相対位置に調整可能な構成を有し、1つの製品で異なる相対位置に対応可能な構成について説明する。 In the first embodiment, a power transmitting device and a power receiving device can be provided that have a relative position of the power transmitting coil and the power receiving coil that can maximize the transmittable power. However, the relative position of the power transmitting coil and the power receiving coil that can maximize the transmittable power varies depending on the shape, size, and gap length of the power transmitting coil and the power receiving coil, so it is necessary to create and manufacture products that correspond to the different relative positions, which creates the problem that each product has a different serial number and requires product certification. Therefore, in this embodiment, a configuration that can be adjusted to different relative positions and allows one product to correspond to different relative positions is described.

図10は、本実施例における送受電システムの概略構成ブロック図である。図10において、図1と同じ構成は同じ符号を付し、その説明は省略する。図10において、図1と異なる点は、送電装置10に、送電コイルを移動可能な機構を設けた点である。すなわち、送電コイル16をレール19a、19bに沿って移動可能な台18に設置し、この台18の位置を外部から調整可能なツマミ18aを設けた点である。なお、レールに限らず、送電コイル16と台18を平行移動できる機構であればよい。移動はx方向、y方向どちらでもよいし、両方組み合わせてもよい。 Figure 10 is a schematic block diagram of the power transmission and reception system in this embodiment. In Figure 10, the same components as in Figure 1 are given the same reference numerals, and their description will be omitted. Figure 10 differs from Figure 1 in that the power transmission device 10 is provided with a mechanism capable of moving the power transmission coil. That is, the power transmission coil 16 is mounted on a platform 18 that can move along rails 19a, 19b, and a knob 18a is provided that can adjust the position of the platform 18 from the outside. Note that the mechanism is not limited to rails, and any mechanism that can move the power transmission coil 16 and platform 18 in parallel will suffice. Movement may be in either the x direction or the y direction, or a combination of both.

図11は、本実施例における送電装置10に受電装置20を載置した状態の平面図および側面図である。図11において、図5と同じ構成は同じ符号を付し、その説明は省略する。図11において、図5と異なる点は、送電コイル16をレール19a、19bに沿って移動可能な台18に設置し、この台18の位置を外部から調整可能なツマミ18aを設けた点である。 Figure 11 is a plan view and a side view of the power receiving device 20 placed on the power transmitting device 10 in this embodiment. In Figure 11, the same components as in Figure 5 are given the same reference numerals, and their description will be omitted. Figure 11 differs from Figure 5 in that the power transmitting coil 16 is mounted on a platform 18 that can move along rails 19a, 19b, and a knob 18a is provided that allows the position of the platform 18 to be adjusted from the outside.

図11において、(a)、(b)、(c)が、送電コイルと受電コイルのギャップ長が第1の長さであるのに対し、(d)、(e)、(f)は、受電装置20が大型化して、ギャップ長が第1の長さよりも長い場合を示している。なお、(a)が平面図、(b)が側面図、(c)が側面図(b)の拡大図である。また、同様に、(d)が平面図、(e)が側面図、(f)が側面図(e)の拡大図である。 In FIG. 11, (a), (b), and (c) show cases where the gap length between the power transmitting coil and the power receiving coil is a first length, while (d), (e), and (f) show cases where the power receiving device 20 is enlarged and the gap length is longer than the first length. Note that (a) is a plan view, (b) is a side view, and (c) is an enlarged view of the side view (b). Similarly, (d) is a plan view, (e) is a side view, and (f) is an enlarged view of the side view (e).

図11(c)に示すように、ギャップ長が第1の長さである場合には、ツマミ18aをスライドさせて伝送可能な電力を最大化できる所定の位置に送電コイル16の位置を調整する。それに対して、(f)に示すように、ギャップ長が第1の長さよりも長い場合は、伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離は(c)の場合よりも小さくなるので、相対距離であるスライド量を(c)よりも小さくするように、ツマミ18aをスライドさせて所望の位置に送電コイル16の位置を調整する。 As shown in FIG. 11(c), when the gap length is the first length, the knob 18a is slid to adjust the position of the power transmission coil 16 to a predetermined position that maximizes the transmittable power. On the other hand, as shown in (f), when the gap length is longer than the first length, the relative distance between the power transmission coil and the power receiving coil that maximizes the transmittable power is smaller than in (c), so the knob 18a is slid to adjust the position of the power transmission coil 16 to the desired position so that the sliding amount, which is the relative distance, is smaller than in (c).

図12は、本実施例における受電装置20での表示画面例を説明する図である。受電装置20での電池容量をQ[wh]、受電電力をP[w]、充電時間をh[h]としたとき、その関係は、Q=P*hとなる。よって、電池容量と受電電力が決まれば充電時間が算出できる。従って、送電コイルと受電コイルの相対距離であるスライド量をツマミ18aによって調整可能であるので、充電制御部23は、調整状態での受電電力から充電時間を算出し、それを表示することでユーザが所望の調整状態に設定できる。 Figure 12 is a diagram illustrating an example of a display screen of the power receiving device 20 in this embodiment. When the battery capacity of the power receiving device 20 is Q [wh], the received power is P [w], and the charging time is h [h], the relationship is Q = P * h. Therefore, once the battery capacity and the received power are determined, the charging time can be calculated. Therefore, since the sliding amount, which is the relative distance between the transmitting coil and the receiving coil, can be adjusted by the knob 18a, the charging control unit 23 calculates the charging time from the received power in the adjusted state and displays it, allowing the user to set it to the desired adjusted state.

図12において、(a)、(b)、(c)はそれぞれ、スライド量が異なる場合の、送電装置10に受電装置20を載置した状態の平面図と受電装置20の表示画面を示している。(a)においては、スライド量が小さい場合であって、例えば、受電装置20の表示画面に受電電力:5W、充電時間:8h、と表示されている。(b)においては、ツマミ18aによって(a)よりもスライド量を大きくする方向に調整した場合、受電装置20の表示画面には、受電電力:8W、充電時間:3h、と表示される。そして、(c)においては、ツマミ18aによって(b)よりもさらにスライド量を大きくする方向に調整した場合、受電装置20の表示画面には、受電電力:10W、充電時間:2h、と表示される。よって、ユーザは、表示画面を見ながら、所望の充電時間となるように、ツマミ18aによってスライド量を調整できる。 12, (a), (b), and (c) show plan views of the power receiving device 20 placed on the power transmitting device 10 and the display screen of the power receiving device 20, respectively, for different sliding amounts. In (a), the sliding amount is small, and for example, the display screen of the power receiving device 20 displays "received power: 5 W, charging time: 8 h." In (b), when the sliding amount is adjusted to a larger amount than (a) by using the knob 18a, the display screen of the power receiving device 20 displays "received power: 8 W, charging time: 3 h." And, in (c), when the sliding amount is adjusted to a larger amount than (b) by using the knob 18a, the display screen of the power receiving device 20 displays "received power: 10 W, charging time: 2 h." Thus, the user can adjust the sliding amount by using the knob 18a to obtain the desired charging time while watching the display screen.

このように、本実施例では、送電コイルと受電コイルの相対距離であるスライド量を調整可能な機構を設けたので、1つの製品で伝送可能な電力を最大化できる異なる相対位置に対応でき、個別に製品の認証を取る必要がなくなるという効果がある。また、ユーザは、表示画面を見ながら、所望の充電時間となるようにスライド量を調整できる。 In this way, in this embodiment, a mechanism is provided that allows the amount of sliding, which is the relative distance between the transmitting coil and the receiving coil, to be adjusted, which has the effect of allowing a single product to accommodate different relative positions that maximize the power that can be transmitted, eliminating the need to obtain individual product authentication. In addition, the user can adjust the amount of sliding to achieve the desired charging time while looking at the display screen.

実施例1では、伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離となるように送電コイルの位置を変えていた。これに対して、本実施例では、送電コイルの位置は変えないで、送電コイルと受電コイルの相対距離を変える例について説明する。 In the first embodiment, the position of the power transmission coil was changed so that the relative distance between the power transmission coil and the power receiving coil was such that the transmittable power could be maximized. In contrast, in the present embodiment, an example will be described in which the relative distance between the power transmission coil and the power receiving coil is changed without changing the position of the power transmission coil.

図13は、本実施例における送電装置10の平面図および側面図である。図13において、図3と同じ構成は同じ符号を付し、その説明は省略する。図13において、図3と異なる点は、受電装置20を載置する窪み10aの位置を変える点である。 Figure 13 is a plan view and a side view of the power transmission device 10 in this embodiment. In Figure 13, the same components as in Figure 3 are given the same reference numerals, and their description will be omitted. Figure 13 differs from Figure 3 in that the position of the recess 10a on which the power receiving device 20 is placed is changed.

図13において、(a)は、窪み10aの位置が送電装置10のy軸方向上部に配置しているのに対して、(b)は、窪み10aの位置が送電装置10のy軸方向下部に配置している。窪み10aは受電装置20の外形と一致しており、受電装置20の位置決め用の窪みとなるので、(a)、(b)に示すように送電装置10での窪み10aの位置を変えることで、送電コイルと受電コイルの相対距離を変えることが出来る。 In FIG. 13, (a) shows that the recess 10a is located at the top of the power transmission device 10 in the y-axis direction, while (b) shows that the recess 10a is located at the bottom of the power transmission device 10 in the y-axis direction. The recess 10a matches the external shape of the power receiving device 20 and serves as a recess for positioning the power receiving device 20. Therefore, by changing the position of the recess 10a in the power transmission device 10 as shown in (a) and (b), the relative distance between the power transmission coil and the power receiving coil can be changed.

なお、窪み10aの位置を移動できるようにしてもよいし、窪み10aの位置が異なるフェイスプレートを複数同梱してユーザが受電装置20の機種に応じて交換しても良い。 The position of the recess 10a may be movable, or multiple faceplates with different recess 10a positions may be included so that the user can change them depending on the model of the power receiving device 20.

このように、本実施例によれば、送電コイルの位置を変えることなく、伝送可能な電力を最大化できる送電コイルと受電コイルの相対位置を備えた送電装置、受電装置、およびそれらを備えた送受電システムを提供できる。 In this way, according to this embodiment, it is possible to provide a power transmission device, a power receiving device, and a power transmission and receiving system including them, in which the relative positions of the power transmission coil and the power receiving coil can be maximized without changing the position of the power transmission coil.

本実施例では、送電装置と受電装置間でデータ伝送機能を備えた例について説明する。 In this embodiment, we will explain an example in which a data transmission function is provided between a power transmitting device and a power receiving device.

図14は、本実施例における送受電システムの概略構成ブロック図である。図14において、図10と同じ構成は同じ符号を付し、その説明は省略する。図14において、図10と異なる点は、送電装置10と受電装置20にそれぞれ通信部31、27を設け、送電SWを無くした点である。すなわち、通信部31、27は、送電装置10と受電装置20間でのデータ伝送を行う。なお、受電装置20の通信部27は、受電装置主機能部25に通信部を有している場合は、それと兼用してもよい。また、通信部31、27で行うデータ伝送を電力伝送用コイルを用いて行ってもよい。 Figure 14 is a schematic block diagram of the power transmission and reception system in this embodiment. In Figure 14, the same components as in Figure 10 are given the same reference numerals, and their description will be omitted. Figure 14 differs from Figure 10 in that the power transmission device 10 and the power receiving device 20 are provided with communication units 31 and 27, respectively, and the power transmission SW is eliminated. In other words, the communication units 31 and 27 transmit data between the power transmission device 10 and the power receiving device 20. Note that, if the power receiving device main function unit 25 has a communication unit, the communication unit 27 of the power receiving device 20 may also be used as the communication unit. Furthermore, the data transmission performed by the communication units 31 and 27 may be performed using a power transmission coil.

図15は、本実施例におけるデータ伝送を用いたワイヤレス電力伝送の処理フロー図である。図15において、まずステップS141において、通信部27、31を介して、受電装置20から送電装置10へ送電要求を送信する。それを受けて、ステップS142において送電装置10は受電装置20へ送電を開始する。このように、本実施例では、データ伝送を行うことで、実施例1での手動による送電SW切り替えを不要としている。 Figure 15 is a process flow diagram of wireless power transmission using data transmission in this embodiment. In Figure 15, first, in step S141, a power transmission request is sent from the power receiving device 20 to the power transmitting device 10 via the communication units 27 and 31. In response to this, in step S142, the power transmitting device 10 starts transmitting power to the power receiving device 20. In this way, in this embodiment, data transmission is performed, making it unnecessary to manually switch the power transmission SW as in embodiment 1.

そして、ステップS143において送電装置10は通信部31、27を介して受電装置20へ投入電力のデータを送信する。ステップS144においては、受電装置20は、二次電池24に供給される受電電力と受信した送電装置10の投入電力から、電力伝送効率=受電電力/投入電力*100(%)を算出し、電池容量と受電電力から充電時間を算出し、受電電力、電力伝送効率、充電時間を表示する。 Then, in step S143, the power transmitting device 10 transmits data on the input power to the power receiving device 20 via the communication units 31 and 27. In step S144, the power receiving device 20 calculates the power transmission efficiency = received power / input power * 100 (%) from the received power supplied to the secondary battery 24 and the input power received by the power transmitting device 10, calculates the charging time from the battery capacity and received power, and displays the received power, power transmission efficiency, and charging time.

ステップS145において、ユーザは送電装置10のツマミ18aを調整して所望の充電位置を選択する。そして、ステップS146において、受電装置20は、充電制御部23によって満充電かを判断し、満充電でなければ、ステップS143に戻って充電を継続する。また、満充電であればステップS147に進み、受電装置20は、通信部27、31を介して送電装置10へ満充電である旨を通知する。そして、ステップS148で受電装置20は、通信部27、31を介して送電装置10へ送電終了要求を送信する。なお、ステップS147またはS148のいずれかは省略し、満充電の通知を送電終了要求と見做してもよい。 In step S145, the user adjusts the knob 18a of the power transmission device 10 to select the desired charging position. Then, in step S146, the power receiving device 20 determines whether the power transmission device 10 is fully charged using the charging control unit 23. If the power reception device 20 is not fully charged, the process returns to step S143 and continues charging. If the power reception device 20 is fully charged, the process proceeds to step S147, in which the power receiving device 20 notifies the power transmission device 10 via the communication units 27 and 31 that the power transmission device 10 is fully charged. Then, in step S148, the power receiving device 20 transmits a request to end power transmission to the power transmission device 10 via the communication units 27 and 31. Note that either step S147 or S148 may be omitted, and the notification of full charge may be regarded as a request to end power transmission.

図16は、本実施例における受電装置20での表示画面例を説明する図である。図16において、図12と同じ構成は同じ符号を付し、その説明は省略する。図16において、図12と異なる点は、表示画面において、電力伝送効率を追加表示した点である。すなわち、電力伝送効率を算出するためには送電装置10の投入電力の情報が必要であるため、通信部31、27を介して送電装置10から受電装置20へ送信された投入電力の情報を用いて受電装置20で算出し表示する。 Figure 16 is a diagram illustrating an example of a display screen on the power receiving device 20 in this embodiment. In Figure 16, the same components as in Figure 12 are given the same reference numerals, and their description will be omitted. Figure 16 differs from Figure 12 in that the power transmission efficiency is additionally displayed on the display screen. That is, since information on the input power of the power transmitting device 10 is required to calculate the power transmission efficiency, the power receiving device 20 calculates and displays the efficiency using information on the input power transmitted from the power transmitting device 10 to the power receiving device 20 via the communication units 31 and 27.

図16において、(a)、(b)、(c)はそれぞれ、スライド量が大、小、中の場合の、送電装置10に受電装置20を載置した状態の平面図と受電装置20の表示画面を示している。
(a)においては、ツマミ18aによってスライド量を大きくする方向に調整し、伝送可能な電力を最大化できる送電コイルと受電コイルの相対距離となるように送電コイルの位置を調整した場合であり、電力伝送モードとして伝送可能電力優先を選択した場合であって、最も早く充電できる場合の例である。受電装置20の表示画面には、受電電力:10W、効率:80%、充電時間:2h、と表示される。(b)においては、ツマミ18aによってスライド量を小さくする方向に調整し、電力伝送モードとして電力伝送効率優先を選択した場合であって、最も電力伝送効率が良い場合の例である。例えば、受電装置20の表示画面には、受電電力:5W、効率:95%、充電時間:8h、と表示される。(c)においては、ツマミ18aによって(b)よりもスライド量を大きく、かつ、(a)よりもスライド量を小さくするように調整した場合であり、充電時間と電力伝送効率効率の両者を考慮して、許容時間内に充電が終わり、かつ、電力伝送効率効率もそれほど悪くない状態を選択した場合(インテリジェントモード)の例である。例えば、受電装置20の表示画面には、受電電力:8W、効率:90%、充電時間:3h、と表示される。
In Figure 16, (a), (b), and (c) respectively show a plan view of the power receiving device 20 placed on the power transmitting device 10 when the sliding amount is large, small, and medium, and the display screen of the power receiving device 20.
In (a), the knob 18a is adjusted to increase the slide amount, and the position of the power transmission coil is adjusted so that the relative distance between the power transmission coil and the power receiving coil is such that the transmittable power can be maximized. This is an example of the case where the transmittable power priority is selected as the power transmission mode, and charging can be performed most quickly. The display screen of the power receiving device 20 displays received power: 10 W, efficiency: 80%, and charging time: 2 h. In (b), the knob 18a is adjusted to decrease the slide amount, and the power transmission efficiency priority is selected as the power transmission mode, and this is an example of the case where the power transmission efficiency is the best. For example, the display screen of the power receiving device 20 displays received power: 5 W, efficiency: 95%, and charging time: 8 h. In (c), the knob 18a is adjusted to increase the slide amount more than in (b) and decrease the slide amount more than in (a), and this is an example of the case where charging is completed within the allowable time and the power transmission efficiency is not so bad, taking into account both the charging time and the power transmission efficiency (intelligent mode). For example, the display screen of the power receiving device 20 displays received power: 8 W, efficiency: 90%, and charging time: 3 hours.

以上のように、本実施例によれば、ユーザは、表示画面の受電電力、電力伝送効率、充電時間を確認しながら、所望の電力伝送モードとなるように、ツマミ18aによってスライド量を調整できる。 As described above, according to this embodiment, the user can adjust the slide amount using knob 18a to achieve the desired power transmission mode while checking the received power, power transmission efficiency, and charging time on the display screen.

以上実施例について説明したが、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。 Although the embodiments have been described above, the present invention is not limited to the above-mentioned embodiments and includes various modified examples. For example, the above-mentioned embodiments have been described in detail to clearly explain the present invention, and are not necessarily limited to those having all of the configurations described. It is also possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to add, delete, or replace part of the configuration of each embodiment with other configurations.

10:送電装置、10a:窪み、10b~10i:位置決め手段、10s:送電コイル収納スペース、11:電源、12:整流平滑回路、13:DC/DC変換器、14:送電制御部、15:送電コイル励振回路、16:送電コイル、17:送電スイッチ(送電SW)、18:台、18a:ツマミ、19a、19b:レール、20:受電装置、21:受電コイル、22:整流平滑回路、23:充電制御部、24:二次電池、25:受電装置主機能部、28:表示パネル、27、31:通信部、251:主制御部 10: Power transmission device, 10a: Recess, 10b-10i: Positioning means, 10s: Power transmission coil storage space, 11: Power source, 12: Rectification smoothing circuit, 13: DC/DC converter, 14: Power transmission control unit, 15: Power transmission coil excitation circuit, 16: Power transmission coil, 17: Power transmission switch (power transmission SW), 18: Stand, 18a: Knob, 19a, 19b: Rail, 20: Power receiving device, 21: Power receiving coil, 22: Rectification smoothing circuit, 23: Charging control unit, 24: Secondary battery, 25: Power receiving device main function unit, 28: Display panel, 27, 31: Communication unit, 251: Main control unit

Claims (11)

送電コイルを有し、受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送電装置であって、
前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置を前記位置決め手段の載置面に載置した際に、前記受電コイルは前記載置面と略平行になるように配置されており、前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記位置決め手段は平面を有する窪みであって、該窪みの形状は前記受電装置の外形と一致していることを特徴とする送電装置。
A power transmitting device that has a power transmitting coil and transmits power by wireless power transmission to a power receiving device that has a power receiving coil,
a positioning means for mounting the power receiving device, the power transmitting coil being disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
when the power receiving device is placed on a placement surface of the positioning means, the power receiving coil is disposed so as to be substantially parallel to the placement surface, and the center of the power transmitting coil is disposed so as to slide a predetermined distance from the center of the power receiving coil,
The power transmitting device, wherein the positioning means is a recess having a flat surface, and the shape of the recess matches the outer shape of the power receiving device.
送電コイルを有し、受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送電装置であって、
前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置を前記位置決め手段の載置面に載置した際に、前記受電コイルは前記載置面と略平行になるように配置されており、前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記送電コイルの設置可能位置が複数である送電コイル収納スペースを前記位置決め手段の載置面の下部に略平行になるように配置して設け、
前記受電装置を前記位置決め手段の載置面に載置した際に前記送電コイルの中心と前記受電コイルの中心との相対距離が選択可能であることを特徴とする送電装置。
A power transmitting device that has a power transmitting coil and transmits power by wireless power transmission to a power receiving device that has a power receiving coil,
a positioning means for mounting the power receiving device, the power transmitting coil being disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
when the power receiving device is placed on a placement surface of the positioning means, the power receiving coil is disposed so as to be substantially parallel to the placement surface, and the center of the power transmitting coil is disposed so as to slide a predetermined distance from the center of the power receiving coil,
a power transmission coil storage space having a plurality of positions at which the power transmission coil can be installed is provided below a mounting surface of the positioning means and is arranged substantially parallel to the mounting surface;
A power transmitting device, characterized in that a relative distance between a center of the power transmitting coil and a center of the power receiving coil can be selected when the power receiving device is placed on a placement surface of the positioning means.
送電コイルを有し、受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送電装置であって、
前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置を前記位置決め手段の載置面に載置した際に、前記受電コイルは前記載置面と略平行になるように配置されており、前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記受電装置を前記位置決め手段の載置面に載置した際に、前記送電コイルと受電コイルは、前記載置面を介して所定のギャップ長で配置されており、
前記送電コイルの中心と前記受電コイルの中心とのスライド量は、結合係数と伝送可能な電力との関係を示した特性から、スライド量が0の状態で前記ギャップ長を調整して目標電力pが得られる範囲内の結合係数mを求め、スライド量と結合係数の関係を示した特性から、前記所定のギャップ長の条件で結合係数が前記求めたmとなるスライド量として求めることを特徴とする送電装置。
A power transmitting device that has a power transmitting coil and transmits power by wireless power transmission to a power receiving device that has a power receiving coil,
a positioning means for mounting the power receiving device, the power transmitting coil being disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
when the power receiving device is placed on a placement surface of the positioning means, the power receiving coil is disposed so as to be substantially parallel to the placement surface, and the center of the power transmitting coil is disposed so as to slide a predetermined distance from the center of the power receiving coil,
when the power receiving device is placed on a placement surface of the positioning means, the power transmitting coil and the power receiving coil are arranged with a predetermined gap length between them via the placement surface,
The power transmission device is characterized in that the sliding amount between the center of the transmitting coil and the center of the receiving coil is determined by: determining a coupling coefficient m within a range in which a target power p is obtained by adjusting the gap length with the sliding amount being 0, based on a characteristic showing the relationship between the coupling coefficient and the transmittable power; and determining the sliding amount such that the coupling coefficient becomes the determined m under the specified gap length condition, based on a characteristic showing the relationship between the sliding amount and the coupling coefficient.
送電コイルを有し、受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送電装置であって、
前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置を前記位置決め手段の載置面に載置した際に、前記受電コイルは前記載置面と略平行になるように配置されており、前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記送電コイルを移動可能な機構を設け、
前記送電コイルの中心と前記受電コイルの中心との距離を調整可能としたことを特徴とする送電装置。
A power transmitting device that has a power transmitting coil and transmits power by wireless power transmission to a power receiving device that has a power receiving coil,
a positioning means for mounting the power receiving device, the power transmitting coil being disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
when the power receiving device is placed on a placement surface of the positioning means, the power receiving coil is disposed so as to be substantially parallel to the placement surface, and the center of the power transmitting coil is disposed so as to slide a predetermined distance from the center of the power receiving coil,
a mechanism capable of moving the power transmitting coil;
A power transmitting device, characterized in that the distance between the center of the power transmitting coil and the center of the power receiving coil is adjustable.
請求項に記載の送電装置において、
前記移動可能な機構は、前記送電コイルをレールに沿って移動可能な台に設置し、該台の位置を外部から調整可能なツマミを設けた構成であることを特徴とする送電装置。
The power transmitting device according to claim 4 ,
The power transmission device is characterized in that the movable mechanism is configured to place the power transmission coil on a platform that can move along a rail, and to have a knob that allows the position of the platform to be adjusted from outside.
送電コイルを有し、受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送電装置であって、
前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置を前記位置決め手段の載置面に載置した際に、前記受電コイルは前記載置面と略平行になるように配置されており、前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記受電装置を載置する前記位置決め手段の位置が異なる複数の構成を有し、
前記受電装置を前記位置決め手段の載置面に載置した際に前記送電コイルの中心と前記受電コイルの中心との相対距離が前記位置決め手段の位置を変えることで選択可能であることを特徴とする送電装置。
A power transmitting device that has a power transmitting coil and transmits power by wireless power transmission to a power receiving device that has a power receiving coil,
a positioning means for mounting the power receiving device, the power transmitting coil being disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
when the power receiving device is placed on a placement surface of the positioning means, the power receiving coil is disposed so as to be substantially parallel to the placement surface, and the center of the power transmitting coil is disposed so as to slide a predetermined distance from the center of the power receiving coil,
The positioning means for placing the power receiving device has a plurality of configurations each having different positions,
A power transmitting device characterized in that, when the power receiving device is placed on a mounting surface of the positioning means, the relative distance between the center of the power transmitting coil and the center of the power receiving coil can be selected by changing the position of the positioning means.
請求項に記載の送電装置において、
前記位置決め手段の位置が異なる複数の構成は、前記位置決め手段の位置を移動できる構成であることを特徴とする送電装置。
The power transmitting device according to claim 6 ,
The power transmitting device, wherein the plurality of configurations having different positions of the positioning means are configurations in which the position of the positioning means can be moved.
請求項に記載の送電装置において、
前記位置決め手段は平面を有する窪みであって、前記位置決め手段の位置が異なる複数の構成は、前記窪みの位置が異なる複数のフェイスプレートであることを特徴とする送電装置。
The power transmitting device according to claim 6 ,
The power transmitting device, wherein the positioning means is a recess having a flat surface, and the plurality of configurations having different positions of the positioning means are a plurality of face plates having the recess at different positions.
送電コイルを有し、受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送電装置であって、
前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置を前記位置決め手段の載置面に載置した際に、前記受電コイルは前記載置面と略平行になるように配置されており、前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記受電装置からのデータを受信する通信部と、
送電制御部を有し、
前記送電制御部は、前記通信部を介して前記受電装置から送信された送電要求に応じて前記受電装置へ送電を開始し、前記通信部を介して前記受電装置から送信された満充電の通知または送電終了要求に応じて前記受電装置への送電を停止することを特徴とする送電装置。
A power transmitting device that has a power transmitting coil and transmits power by wireless power transmission to a power receiving device that has a power receiving coil,
a positioning means for mounting the power receiving device, the power transmitting coil being disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
when the power receiving device is placed on a placement surface of the positioning means, the power receiving coil is disposed so as to be substantially parallel to the placement surface, and the center of the power transmitting coil is disposed so as to slide a predetermined distance from the center of the power receiving coil,
A communication unit that receives data from the power receiving device;
A power transmission control unit is provided.
The power transmission control unit starts transmitting power to the power receiving device in response to a power transmission request transmitted from the power receiving device via the communication unit, and stops transmitting power to the power receiving device in response to a notification of full charge or a request to end transmission transmitted from the power receiving device via the communication unit.
送電コイルを有する送電装置から受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送受電システムであって、
前記送電装置は、前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置は、電力伝送を行う場合には筐体の下面を前記送電装置の前記位置決め手段の載置面に対向させて載置するように構成され、前記受電コイルは、前記筐体の下面と略平行になるように配置されており、
前記受電装置を前記送電装置の前記位置決め手段の載置面に載置した際に前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記送電装置は、前記送電コイルを移動可能な機構を設け、
前記送電コイルの中心と前記受電コイルの中心との距離を調整可能としたことを特徴とする送受電システム。
A power transmission and reception system that transmits power by wireless power transmission from a power transmission device having a power transmission coil to a power receiving device having a power receiving coil,
the power transmitting device has a positioning means for mounting the power receiving device, and the power transmitting coil is disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
the power receiving device is configured to be placed such that a bottom surface of a housing faces a mounting surface of the positioning means of the power transmitting device when transmitting power, and the power receiving coil is disposed so as to be substantially parallel to the bottom surface of the housing;
when the power receiving device is placed on the placement surface of the positioning means of the power transmitting device, the center of the power transmitting coil is slid a predetermined distance from the center of the power receiving coil,
the power transmitting device is provided with a mechanism capable of moving the power transmitting coil,
A power transmitting and receiving system, characterized in that the distance between the center of the power transmitting coil and the center of the power receiving coil is adjustable.
送電コイルを有する送電装置から受電コイルを有する受電装置にワイヤレス電力伝送によって電力伝送を行う送受電システムであって、
前記送電装置は、前記受電装置を載置する位置決め手段を有し、前記送電コイルは、前記位置決め手段の載置面の下部に略平行になるように配置されており、
前記受電装置は、電力伝送を行う場合には筐体の下面を前記送電装置の前記位置決め手段の載置面に対向させて載置するように構成され、前記受電コイルは、前記筐体の下面と略平行になるように配置されており、
前記受電装置を前記送電装置の前記位置決め手段の載置面に載置した際に前記送電コイルの中心が前記受電コイルの中心から所定距離スライドして配置しており、
前記送電装置は、
前記受電装置からのデータを受信する送電装置通信部と、
送電制御部を有し、
前記送電制御部は、前記送電装置通信部を介して前記受電装置から送信された送電要求に応じて前記受電装置へ送電を開始し、前記送電装置通信部を介して前記受電装置から送信された満充電の通知または送電終了要求に応じて前記受電装置への送電を停止し、
前記受電装置は、
前記電力伝送された電力によって充電される二次電池と、
前記送電装置からのデータを受信する受電装置通信部と、
表示部と、
充電制御部を有し、
前記充電制御部は、前記電力伝送された電力である受電電力と前記二次電池の電池容量から前記二次電池の充電時間を算出し、前記受電装置通信部を介して前記送電装置から送信された投入電力の情報を用いて前記受電電力と前記投入電力の比から電力伝送効率を算出し、前記表示部に前記受電電力と前記充電時間と前記電力伝送効率を表示することを特徴とする送受電システム。
A power transmission and reception system that transmits power by wireless power transmission from a power transmission device having a power transmission coil to a power receiving device having a power receiving coil,
the power transmitting device has a positioning means for mounting the power receiving device, and the power transmitting coil is disposed substantially parallel to a lower portion of a mounting surface of the positioning means;
the power receiving device is configured to be placed such that a bottom surface of a housing faces a mounting surface of the positioning means of the power transmitting device when transmitting power, and the power receiving coil is disposed so as to be substantially parallel to the bottom surface of the housing;
when the power receiving device is placed on the placement surface of the positioning means of the power transmitting device, the center of the power transmitting coil is slid a predetermined distance from the center of the power receiving coil,
The power transmitting device is
a power transmission device communication unit that receives data from the power receiving device;
A power transmission control unit is provided.
the power transmission control unit starts transmitting power to the power receiving device in response to a power transmission request transmitted from the power receiving device via the power transmission device communication unit, and stops transmitting power to the power receiving device in response to a full charge notification or a power transmission end request transmitted from the power receiving device via the power transmission device communication unit;
The power receiving device is
a secondary battery that is charged by the transmitted power;
a power receiving device communication unit that receives data from the power transmitting device;
A display unit;
A charging control unit is provided.
A power transmission and reception system characterized in that the charging control unit calculates a charging time for the secondary battery from the received power, which is the transmitted power, and the battery capacity of the secondary battery, calculates a power transmission efficiency from the ratio between the received power and the input power using information on the input power transmitted from the power transmission device via the power receiving device communication unit, and displays the received power, the charging time, and the power transmission efficiency on the display unit.
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JP2021002591A JP7503001B2 (en) 2021-01-12 2021-01-12 Power transmitting device, power receiving device, and power transmitting/receiving system including them
US17/510,695 US20220224169A1 (en) 2021-01-12 2021-10-26 Power transmission device, power reception device, and power transmission/reception system including the same
CN202210006131.5A CN114765387A (en) 2021-01-12 2022-01-05 Power transmitting device, power receiving device, and power transmitting/receiving system provided with same

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013223272A (en) 2012-04-13 2013-10-28 Panasonic Corp Non-contact power supply system for illumination
JP2016082739A (en) 2014-10-17 2016-05-16 日立マクセル株式会社 Portable device, and method and program for supporting non-contact charging
WO2018092569A1 (en) 2016-11-21 2018-05-24 株式会社村田製作所 Electronic device
JP2020061905A (en) 2018-10-12 2020-04-16 エレコム株式会社 Wireless charger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013223272A (en) 2012-04-13 2013-10-28 Panasonic Corp Non-contact power supply system for illumination
JP2016082739A (en) 2014-10-17 2016-05-16 日立マクセル株式会社 Portable device, and method and program for supporting non-contact charging
WO2018092569A1 (en) 2016-11-21 2018-05-24 株式会社村田製作所 Electronic device
JP2020061905A (en) 2018-10-12 2020-04-16 エレコム株式会社 Wireless charger

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US20220224169A1 (en) 2022-07-14
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